Well, I have run a few more tests. Some disturbing results. What I did: 1. Started pumping out units 2. Put all workers on automatic (you controlled of those manually?!?!). 3. Went through a couple of turns. I monitored my memory the entire time. The CivIV.exe never went over 270 Mb. My 'Gauranteed Memory' made it all the way to 1.1 Gb, but never spiked, even during certain slowdowns I will mention now: 1. Going into smaller less developed city screens was slow, but definitely faster than going into any of the bigger more established. Once I went into one city, taking well over a minute for the screen to come up, no subsequent screen took longer that 45 seconds. 2. Ending turns took 4 minutes! For me, this is astonishing. On my games, this never even took a minutes, and I had a lot more units than you did. 3. Pumping out units seemed to make no difference. I had some other issues with this sudden abundance of units, but that is a personal preference thing. 4. That first scroll was always the worst. After that, it really smoothed out. But I did still get some occasional stutters. Again, I've never experienced this on any of my huge map games. 5. The most disturbing thing of all for me: The game took over 3 minutes to 'unload'! Even though the game screen was completely gone, and I had total control over the PC, the .exe was still chomping up 200+ Mb and the 'Guaranteed Memory' was still over a 1 Gb for atleast a minute. This slowly eased until the CivIV.exe got down to about 50 Mb, and then shutdown completely. The Gaurantee Memory likewise got back down to it's normal 270ish size. During this three minutes, any other programs I opened and minimized reacted slowly and were kind of choppy until the .exe finally had relieved itself. Then everything went back to normal speed and smoothness. I've never seen such behavior in any program I've put on this machine, not even CivIV. I sure hope they get this cleaned up. You know I'm really wondering now if they don't have some dedicated code to just cleaning up afterwords, maybe even during the game, that is perhaps a source of some of some of these problems?